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JPEG
Abbreviation for Joint Photographic Experts Group. JPEG is the name of
an international organisation which was jointly established by the ISO and
the ITU-TS (formerly the CCIT), but the term is normally used to refer to the
specifications for the still picture compression algorithm which was
formulated by the JPEG. This algorithm allows still images such as
photographs, single frames of moving images and scanned images to be
compressed to up to 1/100th of their original sizes. However, images which
are compressed in this way cannot be fully restored to their original quality
(some deterioration in quality occurs), so that compression rates of 1/5 to
1/30 are normally used. Because of differences in color separation, two
format sub-types are used: RGB (red, green and blue) and CMYK (cyan,
magenta, yellow, black).
The projector and the JPEG Convertor software do not support the CMYK
sub-type of JPEG file.
BMP
Abbreviation for BitMaP. This is the standard image format for the
bitmapped files (image files consisting of a collection of dots) which are
handled by Windows.
Color levels of monochrome, 16 colors, 256 colors and 16.7 million colors
are supported.
PNG
Abbreviation for Portable Network Graphics.
A high compression rate file format that provides restorable compression
for line raster images.
Because it uses restorable compression, it does not result in any loss of
image resolution unlike JPEG.
RLE
Abbreviation for Run Length Encoding. It can be used to achieve high rates
of compression for image files which contain large areas of a single color.
RLE can be used with monochrome, 16-color and 256-color BMP image
files. (JPEG Convertor does not support files compressed using RLE.)
TIFF
Abbreviation for Tagged-Image File Format. This type of file is used to
exchange documents between computers. Color levels of monochrome,
256 colors and 16.7 million colors are supported. TIFF files in 16.7 million
color format can include transparent color.